body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.top-nav, .bottom-nav {
    background-color: #f5f5f5;
    text-align: center;
}

.top-nav ul, .bottom-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: space-around;
}

.top-nav li, .bottom-nav li {
    display: inline;
    padding: 10px 20px;
    cursor: pointer;
}

.active {
    color: green;
}

.content {
    padding: 10px;
}

.tabs {
    display: flex;
    justify-content: space-around;
    margin-bottom: 10px;
}

.tabs span {
    cursor: pointer;
    padding: 5px 10px;
    display: inline-block;
    background-color: #dedbdb;
    border-radius: 20px;
    margin: 5px;
    font-size: 15px;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.video-card {
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    text-align: center;
}

.video-card img {
    width: 100%;
    height: auto;
}

.video-card .info {
    padding: 10px;
}

.video-card .info span {
    display: block;
}

.footer {
    display: flex;
    justify-content: space-around;
    background-color: #fff;
    padding: 10px 0;
    border-top: 1px solid #ddd;
    position: fixed;
    width: 100%;
    bottom: 0;
}

.footer .footer-item {
    font-size: 16px;
}
.footer .icon{
    font-size: 24px;
    margin-left: 0.5vw;
}
.footer a{
    text-decoration: none; /* 移除下划线 */
    color: inherit; /* 继承父元素的颜色，或者指定为你想要的颜色 */
    /* 你可以添加更多的样式来确保<a>标签看起来和普通文本或元素一样 */
}
